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Six months after the death of her father, beloved comedian Robin Williams, Zelda Williams is "taking it one step at a time."

Speaking publicly for the first time since her father's passing in August, Williams opens up to NBC's Kate Snow about honoring his legacy of charity works and trying to move forward with her own life.

Williams, 25, says she doesn't dwell on what led the "Mork & Mindy" and "Good Will Hunting" star to commit suicide. "I don’t think there’s a point," she said in the interview which aired Thursday on "Today." "It’s not important to ask."

On Friday Williams will honor her dad's legacy of giving back when she presents an award to her father and his teammates who joined him in a triathlon every year at the Challenged Athlete Foundation. The foundation helps to provide prosthetics to disabled athletes. "Dad was an extremely athletic person," says Williams. "People don't know about that."

According to Williams her father always enjoyed humanitarian work. "That was what his favorite thing other than comedy really was."

Of the public outpouring of love and grief for her dad in the wake of his passing, Williams says people will remember her father for "the characters that he had so much fun being, and that's what's important, and I do think that's what a lot of people will hold on to and that's not going anywhere."

In memory of her dad Williams got a tattoo of a hummingbird on her right hand, choosing the location because she says it's something she wants to see everyday. "Hummingbirds are fun and flighty and strange. It's hard to keep them in one place and Dad was a bit like that. Keeping a conversation in one moment was impossible with him."

Williams says life without her father is hard, but she continues to try and move forward. "It’s going to take a lot of work to allow myself to have the sort of fun, happy life that I had, but that's important. Anybody who has ever lost anyone works very hard to continue that memory in a positive way."